Paper-feeding mechanism for type-writing machines.



P. J. TANNBR 651. E. JONES. PAPER FEEDING MECHANISM FOR TYPE WRITING MACHINES.

APPLICATION FILED AUG, 12, IQOF.

Patented Dec. 19, 1911.

2 SHEBTSSHEET 1,

F. J. TANNER 52 I. E. JONES. PAPER FEEDING MECHANISM FOR TYPE WRITING MACHINES,

APPLTGATIOB' FILED AUG )2. 190? Patented Dec. 19, 1911.

2 SHEBTS-$HEET 2 UNITED STATES PATENT OFFICE.

FRANK J. TANNEB AND IWAN E. JONES, OF SCBANTON, PENNSYLVANIA, ASSIGNOBS TO INTERNATIONAL TEXT BOOK COMPANY. OF SCRANTON, PENNSYLVANIA, A COR- POBA'IION OF PENNSYLVANIA.

PAPER-FEEDING MEOHANISM FOR TYPE-WRITING MACHINES.

Specification of Letters Patent.

Patented Dec. 19, 1911.

Application filed August 12, 1907. l Serial No. 888,231. p r

certain new and useful Improvements in Paper-Feeding Mechanism for Type-Writ ing Machines, of which the following is a specification.

a This invention relates more particularly to paper feeding mechanismfor typewriting machines, and it consists in various improvements in details ofconstruction, all of which will be described in connection with the accompanying drawings in which,--

Figure 1 is a front view ofso much of the carriage of a typewriting machine as is necessary to illustrate the resent invention; F i 2 is a lan view an Fig. 3 is a right on view 0 the same; Figs. 4, 5 and. 6 are respectively sections on the lines 44, 5-5 an 66 of Fig. 1.

Referring to the drawing, 1 indicates a ortion of the frame of the carriage of a ypewriter, which, frame may be of any structure suitable for the particular machine to which the invention is applied. On the frame is mounted a platen shaft 2 carrying a platen 3. In a part of the frame 1 is also mounted a fixed rod 4 arranged below the platen and upon this rod at each end of the platen are pivotally mounted two arms 5, 6.

n the free ends of the arms 5 a shaft 7 is mounted, which shaftcarries a series of paper feed rolls 8, and in the free ends of the arms 6, a second shaft 9 is mounted, upon which shaft are a series of paper feed rolls 10. A pair of springs 11, one at each endvof the platen, normally press the'shafts 7 and 9, upward and hold the pressure rolls a ainst the laten. These springs may be 0 any suita le design, but they are preferably of the form shown in Figs. 1 and 4, in which. the middle ortion of the spring rests on the rod 4, while the free-ends press upwardly on the shafts 7 and 9. frame 1 is also mounted a rock shaft 12 in "the rear of the platen, and suitably connected with this shaft is a paper table 13 of thin sheet: metal. The sheet formin the paper'table is preferabl contained he rod andaround the aten over the feed roll shafts 7 and 9 toorm'a 14. This paper guide is pre erably pro moval of In the elow aper guide vided with In 15 at its ends, throu h which the shots 7 and 9 pass to hold tie palper guide in fixed relation to the feed re s.

It is necessary to rovide means for moving the pa or fee rolls away from the platen to aeilitate the insertion and rea er, and it is desirable that the rblls shou d free to move to a sli ht extent independently so that either 0 them .will hold one or more sheets of pa er when the other is idle, or so that they wi l operate on different thicknesses of paper at the same time. We provide for moving the paper feed rolls away from the 'platen by connecting the arms 5, 6 at each end of the platen with apair of toggle levers 16, the ends of the to gle levers being connected by ivots 17, and provide means for spreadmg the toggle levers to force the feed rolls away from the platen. As shown, arms 18 are rigidly mounted on the rock shaft 12 and are provided with slotted jawswhich engage the pivots 17. Each of the arms 18 is provided with a handle 19 conveniently located at the end. of the paper table. The slots or notches in the arms 18 are substantially horizontal and ermit of slight movement of the pivots ii of the toggle levers, whereby the arms 5, 6 carrying the aper feed rolls may move slightly to permit the paper feed rolls to adgust themselves independently to the platen. VVhen either of the thumb levers 19 is moved forward, the arms 18 are depressed, which results in spreading the toggle levers 16 and throwing bot-h sets of paper feed rolls away from the platen. On releasing the lever 19, the springs 11 reengage the feed rolls with the platen.

It will be evident that the paper feed mechanism above described is effective in operation, simple in construction and economical of manufacture. It will also be evident that various changes in the details of construction and arrangement of the parts may be made without departing from the spirit and scope of the invention.

Having described the invention what we claim and desire to secure by Letters Patcut is:

1. In a typewriting machine, the combination with a platen and the supporting frame therefor, of a rod extendin longitudinally beneath the platen, arms pivotally mounted on and extending in op osite directions from said shaft, aper fee rolls supported by said arms, a cat spring having an intermediate deflected section extending over and enga 'ng said shaft and its ends acting to hol both sets of paper feed rolls against the platen, and means for rocking the roll carrying arms against the action of the spring to move the rolls from the platen.

2. In a typewriting machine, the combination with a platen and the sup orting frame therefor, of two arms exten ing in opposite directions from a common ivotal axis beneath the platen, paper feed ro Is an ported b said arms, means acting to hol d said fee rolls against the lplaten, a to g'le having its members pivota y connecte to said arms, and a lever fulcr'umed on the platen supporting frame and having one arm provided with a recess into which the upper end of the toggle extends.

3. In a typewriting machine, the combinationwith a laten and the supporting frame therefor, o a rod extending beneath the platen, a plurality of sets of armsmounted on and extending in opposite directions from said shaft, paper feed rolls supported b said arms, means acting to hold the feed rol s against the laten, a tog is having its members pivota y connectefwith a set of roll supporting arms at one end of the platen, and a lever fulcrumed on the platen supporting frame in rear of the platen and having one arm extending forwardly over and in position to actuate the to gle.

at. In a typewriting marfiune, the combination with a platen and the supporting frame therefor, of two .sets of paper feed rolls arranged to rock about an intermediate axis,

means acting to hold said rollsagainst the platen, a pa er guide mounted to rock about a horizonta ax1s and having slots through which the aper feed rolls project, and means movable 11 out the axis 0 the paper guide for moving the feed rolls away from the platen.

In testimony whereof we afiix our signatures in presence of two witnesses.

FRANK J. TANNER. IWAN E. JONES.

Witnesses:

NELSON H. PnoUTr, ARTHUR J. PHILLIPS. 

